Question about Heating & Cooling
Central air unit with furnace function working fine, but switched to ''cool'' fan is set to ''auto''. Outside AC unit turns on fine but blower never kicks on inside the furnace. I've had trouble with the limit switch in the past, but replaced it and everything worked fine. I tried fiddling with the unit and if the limit switch leads are hardwired (basically eliminating a faulty limit switch) no blower and no error indicator light, but disconnecting them kicks on the blower (infinitely) but, also gives an open limit error on the board. I don't imagine the limit plays into the AC function? but it's the only thing I know I've had trouble with. Not sure what actually triggers the blower to start on AC function...so what to check?
The Furnace is a Janitrol GPD100-4 REV-B
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Posted on Jan 02, 2017
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